Hi!
I have a problem, I'm making code that checks if the WiFi was disconnected. When I run the code below, even when I turn the router off, it goes into "if verification" and appears as connected.
Can anybody help me? I don't know what may be happening.
#include <WiFi.h>
#include <esp_wifi.h>
#include <WiFiClient.h>
#include <ESP_WiFiManager.h>
/*VARIÁVEIS DE CONFIGURAÇÃO DO WIFI*/
// SSID and PW for Config Portal
String ssid = "ESP_" + String(ESP_getChipId(), HEX);
const char* password = "your_password";
// SSID and PW for your Router
String Router_SSID;
String Router_Pass;
// Indicates whether ESP has WiFi credentials saved from previous session
bool initialConfig = false;
// Use true for dynamic DHCP IP, false to use static IP and you have to change the IP accordingly to your network
#define USE_DHCP_IP true
// Use DHCP
IPAddress stationIP = IPAddress(0, 0, 0, 0);
IPAddress gatewayIP = IPAddress(192, 168, 2, 1);
IPAddress netMask = IPAddress(255, 255, 255, 0);
IPAddress dns1IP = gatewayIP;
IPAddress dns2IP = IPAddress(8, 8, 8, 8);
bool firstConnection = false;
int connected;
void setup() {
connectWifi();
Serial.begin(115200);
}
void loop() {
// put your main code here, to run repeatedly:
if (firstConnection)
{
check_status();
}
if (WiFi.status() != WL_CONNECTED)
{
connected = 0;
Serial.println("disconnected");
Serial.println(connected);
}
else
{
connected = 1;
Serial.println("connected ");
Serial.println(WiFi.SSID());
Serial.println(connected);
}
}
void connectWifi() {
Serial.println("\nStarting ConfigOnSwitch on " + String(ARDUINO_BOARD));
unsigned long startedAt = millis();
//Local intialization. Once its business is done, there is no need to keep it around
// Use this to default DHCP hostname to ESP8266-XXXXXX or ESP32-XXXXXX
//ESP_WiFiManager ESP_wifiManager;
// Use this to personalize DHCP hostname (RFC952 conformed)
ESP_WiFiManager ESP_wifiManager("ConfigOnSwitch");
ESP_wifiManager.setDebugOutput(true);
// Use only to erase stored WiFi Credentials
//resetSettings();
//ESP_wifiManager.resetSettings();
//set custom ip for portal
//ESP_wifiManager.setAPStaticIPConfig(IPAddress(192, 168, 100, 1), IPAddress(192, 168, 100, 1), IPAddress(255, 255, 255, 0));
ESP_wifiManager.setMinimumSignalQuality(-1);
// We can't use WiFi.SSID() in ESP32as it's only valid after connected.
// SSID and Password stored in ESP32 wifi_ap_record_t and wifi_config_t are also cleared in reboot
// Have to create a new function to store in EEPROM/SPIFFS for this purpose
Router_SSID = ESP_wifiManager.WiFi_SSID();
Router_Pass = ESP_wifiManager.WiFi_Pass();
//Remove this line if you do not want to see WiFi password printed
Serial.println("Stored: SSID = " + Router_SSID + ", Pass = " + Router_Pass);
// SSID to uppercase
ssid.toUpperCase();
if (Router_SSID == "")
{
Serial.println("Open Config Portal without Timeout: No stored Credentials.");
//digitalWrite(PIN_LED, HIGH); // Turn led on as we are in configuration mode.
//it starts an access point
//and goes into a blocking loop awaiting configuration
if (!ESP_wifiManager.startConfigPortal((const char *) ssid.c_str(), password))
Serial.println("Not connected to WiFi but continuing anyway.");
else
Serial.println("WiFi connected...yeey :)");
}
// digitalWrite(PIN_LED, LOW); // Turn led off as we are not in configuration mode.
#define WIFI_CONNECT_TIMEOUT 30000L
#define WHILE_LOOP_DELAY 200L
#define WHILE_LOOP_STEPS (WIFI_CONNECT_TIMEOUT / ( 3 * WHILE_LOOP_DELAY ))
startedAt = millis();
while ( (WiFi.status() != WL_CONNECTED) && (millis() - startedAt < WIFI_CONNECT_TIMEOUT ) )
{
WiFi.mode(WIFI_STA);
WiFi.persistent (true);
// We start by connecting to a WiFi network
Serial.print("Connecting to ");
Serial.println(Router_SSID);
WiFi.config(stationIP, gatewayIP, netMask);
//WiFi.config(stationIP, gatewayIP, netMask, dns1IP, dns2IP);
WiFi.begin(Router_SSID.c_str(), Router_Pass.c_str());
int i = 0;
while ((!WiFi.status() || WiFi.status() >= WL_DISCONNECTED) && i++ < WHILE_LOOP_STEPS)
{
delay(WHILE_LOOP_DELAY);
}
}
Serial.print("After waiting ");
Serial.print((millis() - startedAt) / 1000);
Serial.print(" secs more in setup(), connection result is ");
if (WiFi.status() == WL_CONNECTED)
{
connected = 1;
Serial.print("connected. Local IP: ");
Serial.println(WiFi.localIP());
}
else
connected = 0;
Serial.println(ESP_wifiManager.getStatus(WiFi.status()));
}
void check_status() {
// is configuration portal requested?
if (firstConnection){
Serial.println("\nConfiguration portal requested.");
//digitalWrite(PIN_LED, HIGH); // turn the LED on by making the voltage LOW to tell us we are in configuration mode.
//Local intialization. Once its business is done, there is no need to keep it around
ESP_WiFiManager ESP_wifiManager;
ESP_wifiManager.setMinimumSignalQuality(-1);
//set custom ip for portal
// ESP_wifiManager.setAPStaticIPConfig(IPAddress(192, 168, 100, 1), IPAddress(192, 168, 100, 1), IPAddress(255, 255, 255, 0));
// Set static IP, Gateway, Subnetmask, DNS1 and DNS2. New in v1.0.5
ESP_wifiManager.setSTAStaticIPConfig(stationIP, gatewayIP, netMask, dns1IP, dns2IP);
//Check if there is stored WiFi router/password credentials.
//If not found, device will remain in configuration mode until switched off via webserver.
Serial.print("Opening configuration portal. ");
Router_SSID = ESP_wifiManager.WiFi_SSID();
if (Router_SSID != "")
{
ESP_wifiManager.setConfigPortalTimeout(120); //If no access point name has been previously entered disable timeout.
Serial.println("Got stored Credentials. Timeout 120s");
}
else
Serial.println("No stored Credentials. No timeout");
//it starts an access point
//and goes into a blocking loop awaiting configuration
if (!ESP_wifiManager.startConfigPortal((const char *) ssid.c_str(), password))
{
Serial.println("Not connected to WiFi but continuing anyway.");
}
else
{
//if you get here you have connected to the WiFi
Serial.println("connected...yeey :)");
Serial.print("Local IP: ");
Serial.println(WiFi.localIP());
}
//digitalWrite(PIN_LED, LOW); // Turn led off as we are not in configuration mode.
}
static ulong checkstatus_timeout = 0;
#define HEARTBEAT_INTERVAL 10000L
// Print hearbeat every HEARTBEAT_INTERVAL (10) seconds.
if ((millis() > checkstatus_timeout) || (checkstatus_timeout == 0))
{
heartBeatPrint();
checkstatus_timeout = millis() + HEARTBEAT_INTERVAL;
}
}
void heartBeatPrint(void)
{
static int num = 1;
if (WiFi.status() == WL_CONNECTED)
Serial.print("H"); // H means connected to WiFi
else
Serial.print("F"); // F means not connected to WiFi
if (num == 80)
{
Serial.println();
num = 1;
}
else if (num++ % 10 == 0)
{
Serial.print(" ");
}
}